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- MakaleYalnız künye2026Association Between Cervical Discopathy and Temporomandibular Joint Dysfunction
Taspinar, Ozgur
Objective: Cervical discopathy is a pathology resulting from the displacement of the nucleus pulposus into the cervical spinal canal. Temporomandibular joint disorder (TMJ) is characterized by pain and limited movement in the temporomandibular region. The purpose of this study was to investigate the relationship between symptoms of TMJ dysfunction and cervical discopathy. Materials and Methods: The study included patients diagnosed with cervical disc herniation who presented to our outpatient clinic, along with a control group consisting of patients from other outpatient departments without cervical spine pathology. Participants were evaluated based on demographic data, systemic diseases, trauma history, TMD symptoms, joint sounds, facial pain, teeth grinding, teeth clenching, yawning, mouth opening capacity, masseter pain, and preferred sleeping position. Results: A total of 90 individuals participated in the study: 45 with cervical disc herniation and 45 controls. There were no statistically significant differences between the groups in terms of age or body mass index (BMI) (p>0.05). However, a statistically significant association was found between cervical discopathy and masseter pain, denture use, trauma history, TMD symptoms, teeth grinding, and teeth clenching (p<0.05 for all). Conclusion: This study found significant associations between cervical discopathy and TMJ symptoms such as masseter pain, denture use, trauma, teeth grinding, and clenching. These findings are consistent with the literature. The jaw joint should be carefully evaluated in patients with cervical discopathy.
- MakaleAçık Erişim2022Evaluation of apical extrusion of debris during retreatment: R-Endo rotary instruments versus hand files
Haznedaroglu, Faruk; Akgül, Nazan Yırgın; Vardar, Cagla
Aim: The aim of this ex vivo study was to compare the amount of debris extruded during retreatment using stainless steel hand files (Hedstroem files) and R-Endo Nickel Titanium rotary instruments. Methodology: Eighty single-rooted freshly extracted human mandibular premolars were divided into two groups consisting of 40 teeth each. Retreatment was performed with R-Endo (Micro-Mega, Besançon, France) and Hedstroem files (Dentsply, Maillefer, Ballaigeus, Switzerland). The experimental teeth were obturated with lateral condensation technique. Then, 1.5-mL Eppendorf tubes were used to collecting the material that was extruded during preparation by subtracting post-instrumentation weight from pre-instrumentation weight. Results: There were significant differences in the amount of debris extruded between the groups (p<0.001). The amount of apical extrusion in the R-Endo group was determined to be less than in the hand instrumentation group. Conclusion: Within the limitations of this study, it might be concluded that all tested instruments resulted in apical extrusion of debris. During endodontic retreatment procedures, the hand files extruded a significantly higher amount of debris than the R-Endo.